Patent US2936017A successfully refreshed from Google Patents.
Patent US4882089A successfully refreshed from Google Patents.
US4882089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions convertible to reinforced conductive components and articles incorporating same
Assignee: Wyeth Holdings LLC
•
Filing: 1987-11-18
•
Granted: 1989-11-21
•
Expires: 2007-11-18
Abstract
Abstract Electrically and/or thermally conductive reinforced compositions convertible to reinforced components are disclosed. The compositions comprise a polymeric material of little or no conductivity and high strength, metal plated composite fibers having a conductive semi-metallic core and a thin, firmly adhered layer of an electrodepositable metal coating on said core. The metal coated composite fibers will not loss their conductive coatings during normal processing and provide conductivity without reducing the physical properties of the polymeric material. The compositions of the invention are convertible to conductive components such as laminate prepregs, surface plys for laminates, conductive adhesives, conductive inks, and conductive elastomeric gaskets. The components can be incorporated in improved articles such as structural parts for transportation vehicles, printed circuit boards, lighting shields and molded articles.
Inventors
- 👤 Richard S. Iwaskow
- 👤 Stephen M. Crum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:58
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4209; D04H1/4234; D04H1/4326; D04H1/435; D04H1/4382; D04H1/43825; D04H1/43828; H01; H01B; H01B1/00; H01B1/20; H01B1/22; H01B1/24; H01B5/00; H01B5/14; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/30; Y10T442/00; Y10T442/30; Y10T442/3382; Y10T442/339; Y10T442/40; Y10T442/475; Y10T442/60; Y10T442/654; Y10T442/655
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
130 words
An article of manufacture comprising: (i) a polymeric material with little or no conductivity; and (ii) composite fibers, the majority of which have an electrically conductive non-metallic or semi-metallic core and at least one thin, uniform, firmly adherent, electrically conductive layer of at least one electrodepositable metal on said core, alone, or in combination with other fibers, the amount of component (ii) in said composition being at least effective to render said article of manufacture electrically and/or thermally conductive, and wherein said composite fibers of component (ii) are the sole electrically or thermally conductive component added to component (i), wherein said polymeric material (i) is present with a woven, knitted, or nonwoven fabric, sheet or mat comprising said composite fibers (ii) or with said composite fibers (ii) in comminuted form.
Claim 2
Dependent Claim
130 words
An article of manufacture comprising: (i) a polymeric material with little or no conductivity; and (ii) composite fibers, the majority of which have an electrically conductive non-metallic or semi-metallic core and at least one thin, uniform, firmly adherent, electrically conductive layer of at least one electrodepositable metal on said core, alone, or in combination with other fibers, the amount of component (ii) in said composition being at least effective to render said article of manufacture electrically and/or thermally conductive, and wherein said composite fibers of component (ii) are the sole electrically or thermally conductive component added to component (i), wherein said polymeric material (i) is present with a woven, knitted, or nonwoven fabric, sheet or mat comprising said composite fibers (ii) or with said composite fibers (ii) in comminuted form.
Claim 3
Dependent Claim
61 words
An article of manufacture as defined in claim 1, wherein said polymeric material is selected from the group consisting essentially of polyesters, polyethers, polycarbonates, epoxies, epoxy-novolacs, epoxy-polyurethanes, urea-type resins, phenolformaldehyde resins, thiourea resins, melamine resins, urea-aldehyde resins, alkyd resins, polysulfide resins, vinyl organic prepolymers, multifuctional vinyl esters, cyclic ethers, cyclic esters polycarbonaete-co-esters, polycarbonate-so-silicones, polyetheresters, polyimides, polyamides, polyesterimides, polyamideimides, polyetherimides, and polyvinylchlorides.
Claim 4
Dependent Claim
33 words
An article of manufacture as defined in claim 1 wherein the electrically conductive semi-metallic core of said composite fibers (ii) is selected from the group consisting essentially of carbon, boron and silicon carbide.
Claim 5
Dependent Claim
47 words
An article of manufacture as defined in claim 1 wherein said electrically conductive metal layer is formed of an electrodepositable metal selected from the group consisting of: nickel, silver, zinc, copper, lead, arsenic, cadmium, tin, cobalt, gold, indium, iridium, iron, palladium, platinum, tellurium, tungsten, and mixtures thereof.
Claim 6
Dependent Claim
76 words
An article of manufacture as defined in claim 1 wherein the bond strength of the electrodepositable metal layer to the core of said composite fibers (ii) is at least sufficient to provide that when the composite fiber is sharply bent, the coating on the tension side of the bend will break when its elastic limit is exceeded and on the compression side of the band will remain bonded to the core and will not crack circumferentially.
Claim 7
Dependent Claim
31 words
The article of manufacture as defined in claim 1 wherein the polymeric material (i) is reinforced with a woven, knitted or non-woven fabric, sheet or mat comprising said composite fibers (ii).
Claim 8
Dependent Claim
23 words
The article of manufacture as defined in claim 1 wherein the polymeric material (i) is reinforced with composite fibers (ii) in comminuted form.
Claim 9
Dependent Claim
26 words
A composite laminate comprising a base layer and on at least one surface thereof a film or layer comprising an article as defined in claim 1.
Claim 10
Dependent Claim
15 words
A shaped article of manufacture formed from the composite laminate as defined in claim 8.
Claim 11
Dependent Claim
20 words
A composite laminate comprising a base laminate and a layer of an article of manufacture as defined in claim 1.
Claim 12
Dependent Claim
15 words
A shaped article of manufacture formed from the composite laminate as defined in claim 10.
Claim 13
Dependent Claim
16 words
An article of manufacture as defined in claim 2 wherein said polymeric material is a polyester.
Claim 14
Dependent Claim
33 words
A shaped article of manufacture as defined in claim 1 wherein said polymeric material is a thermostat or a thermoplastic and said composite fibers comprise comminuted nickel, silver, or gold coated graphite fibers.
Claim 15
Dependent Claim
128 words
A gasket comprising: (i) a polymeric material with little or no conductivity; and (ii) composite fibers, the majority of which have an electrically conductive non-metallic or semi-metallic core and at least one thin, uniform, firmly adherent, electrically conductive layer of at least one electrodepositable metal on said core, alone, or in combination with other fibers, the amount of component (ii) in said composition being at least effective to render said article of manufacture electrically and/or thermally conductive, and wherein said composite fibers of component (ii) are the sole electrically or thermally conductive component added to component (i), wherein said polymeric material (i) is present with a woven, knitted, or nonwoven fabric, sheet or mat comprising said composite fibers (ii) or with said composite fibers (ii) in comminuted form.
Claim 16
Dependent Claim
128 words
A gasket comprising: (i) a polymeric material with little or no conductivity; and (ii) composite fibers, the majority of which have an electrically conductive non-metallic or semi-metallic core and at least one thin, uniform, firmly adherent, electrically conductive layer of at least one electrodepositable metal on said core, alone, or in combination with other fibers, the amount of component (ii) in said composition being at least effective to render said article of manufacture electrically and/or thermally conductive, and wherein said composite fibers of component (ii) are the sole electrically or thermally conductive component added to component (i), wherein said polymeric material (i) is present with a woven, knitted, or nonwoven fabric, sheet or mat comprising said composite fibers (ii) or with said composite fibers (ii) in comminuted form.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |